Piping



5 the adjoining end of section 1 as shown, and is Patented A ug. 29, 1933 Anton Hansen, Newark, N.- J.,assignors"to; Central FoundryCompany, New York, N. Y; a l

, corporation of Maine Application October 13, 1930. SerialT'No. 488,229;

' s claeiis'. (01. 285-134 Our invention relates to-improvements in piping, and more particularlyhas reference to' and is illustrated in the accompanying drawings in its application to'pipe connectionsfsuch as are com-'- monly used for water, drainagepand ojth'erpurposes for conveying fluids'of various kinds. One of'the' principal objects "of the invention isto provide a substantially hermetical pipe ,joint or connection between sections of pipe such "as are usually buried under ground,;and to allow for variations in alignmentof the same.

'In the accompanying drawings'Figfl is alongitudinal vertical'sectionalview of one form of the invention, and Figs. 2 and 3 are similar views of a modified form, withnon-a gned and aligned pipe sections respectively.

g In thedrawings, referencemurnerals 1"' and 2 indicate the adjoining ends of coupled pipesections each of wh'ich areprovided with lugs 3, 4,

havingholes 13, for the bolts 5, 6, said holes being preferably of slightly larger diameter than the, bolts to prevent binding orpinching of the bolts therein whenthe sections of pipe are out of alignment; 1

The male end of the section 2 is adapted to enter provided with a circumferential tapered face portion 7 varying only slightly from parallelism with the axis of the bore of the pipe section 2, and gradually reducing the thickness of the wall of that pipe section fromits normal-external diameter to- 'ward its free spigot end. The female end of the pipe section 1, adjacent its free end has an inner bearing face portion 8 of less diameter than the largest diameter of the face portion 7, and both of these face portions maybe curved on a radius 45. faces permits the pipe sections to be secured out centering on the axis of the bore of thepipesection 1 at a point substantially in the plane of the free end of the pipe section -1. 'The slight pitch of the taper of face portions 7 and 8 permit the.

former to jam tightly into the face portion 8 when the pipe sections are forcibly drawn together under tremendous force exerted by the bolts '5 so] that these faces '7 and 8 slide over each other with a self-lapping effect,.and the curvature of these of alignment with each other yet at the sametime the face portions 7 and 8 still draw together with the self-lapping effect. 7 s

The extreme inner end of the male section is also tapered 'circumferentially, asindicated at 9. and at theinsideadjacent the end of the female section is provided a circumferential channel 10 or other suitable recessed portion into which may be introduced a ring or'gasket 11 of suitable com-.

a PIPING t lleonard S aine, Jackson Heights," NLT'Y L,

ipositic ingor rubber; the same, being. preferably re silient, elastic or plastic, ,andithel insides of I the sectionsimay be coated orjrlined with cement, enamel, or other suitable noncorrosive material which also preferably. extends 'over the taper 9 and "inside the circumferential channel 1 lof as shown atS-IO". The said recessed"portion'lof pro vides'"a" suitablejretaining" seat for said ring or a y x .1 When the sectionsiarelaid, the rings orjga'skets 11 are first applied, and afterthe-endj of a'male 11 1 section has'been introduced into the end'of the adjacent: section, the bolts 5 and s a eith ap pliedyand drawnup substantially tightly; thus alis mg the sections toa'ccommodate themselves to any j slight unevenness oryla'ck of alignment. I

And, of course,- suitable look-washers; monies-12;,

'may' be-employedbeneath the nuts 1 3";1 fIt has beenfound that pipelconnec ted v manner provides a substantially continuous hermetically sewed" duct, and even when some of "the bolts are removed after liquid under-pressure has been allowed through the piping, the same -remains intactwithout leakage, thus assuring a per- .fectly tight job, easily and quickly laid, and handleable with minimum breakage. Also, it will be I readily observed that the ring 11 of suitable pack ff ing material willbe compressed between-the tapered surface 9 and the recessed portion or channel 10 proportionately with the pressure within said piping'and substantially without tending to i separate the sections of the same.

In other words,

the pressure within the'piping tends to :drive the ring 11 radially and down into'theseat'at the outer side of the channel 10, thereby proporg Wall of saidchannel and the tapered wall 9 of the adjoining section. The modified form is the 5 same substantially in principle to the main form,

except that the face portion 7", whilestill slig htly tapered is not curved and the face portion 8" is conical though h'aving a greater pitch than the substantially similar to that as in "the main form.

The internal'diameter of the face portion 8/; is of less diameterthan the largest diameter of the v face portion 7'. The packing receivingv seat 9? is 0 Of course, it will be readily understood that, Y

various modifications may be made in the conr struction and arrangement of parts without de-' parting from the spirit of the; invention. as 1 V V 'claimed. r

tionately compressing the same between the outer.

I claim:

1. In a device of the character described, a pipe section having a male end and a pipe section having a female end, the male end having a substantially smooth outer face portion tapering toward its free end and varying only ,slightly from parallelism with the axis of the bore of the male 7 end, thefemale end being provided adjacent its free end with a substantially smooth inner face portion slidably telescoped with the tapering out-' er faceportion of the male end and being of less diameter than the largest diameter of the last mentioned face portion, means forforcing the said face portions of themale and female ends together with a jamming fit, one of the pipe ends being provided with an annular recessed portion adjacent its jammed face portion, and packing seated against said recessed portion, the free end.

tion slidably telescoped with the, tapering outer face portionof the male end and being of less diameter than the. largest diameter of the last mentioned face portion, the said face portion of the male end being alsorcurvedon a radius centering on; the axis of the male. end substantially in the plane of the free end of the female end, means for forcing the said faceportions of the male and female ends together with a jamming fit, the male end being provided with an annular interior groove, adjacent, its jammed face portion, the free 'end of the male end terminating shortof the inner wall of the female end,'and packing within the said groove, and surroundingthe free end portion of the male end and being exposed to.

, thepressureof the fluid fmedium conveyed by the pipe sections. a

3. In a device of the character described, a pipe section having a male end and a pipe section having a female end, the male end having a substantially smooth outer face, portion tapering from the general outer diameter of the respective pipe section toward a free end of said pipe section, the

pitch of the said tapering face portion varying only slightly from parallelism with the'axis of the bore of themale' end, the female end being provided adjacent its free end with a substantiallysmooth inner face slidably telescoped with the tapering outer face portion ofthe male end and being, of less diameter than the largestdiameter of the last-mentioned face portion, thetele- I scopedfface portions of the male and female ends being also curvedon a radius centering on the axis of the male endsubstantially in the plane a of the free end of the female end, means ,for forcing the said face portions of themale and female ends together with a jamming fit, the femaleend'being internally channeled adjacent-its jammed face portion and having a.- shoulder malevend having a second tapering face portion between its other tapering face portion and on a greater angle, and packing surrounding said second tapering face portion; of the male end and x spaced from the free end of the male end, the

within the said'channel and being in communication withthe pressure of the fluid conveyedby the pipe sections. I 3 V I I LEONARD W. SAINE; T

, ANTON HANSEN, 

